120665772 has 36 divisors (see below), whose sum is σ = 305528496. Its totient is φ = 40154400.

The previous prime is 120665771. The next prime is 120665773. The reversal of 120665772 is 277566021.

120665772 is a `hidden beast` number, since 1 + 20 + 66 + 577 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (120665771) and next prime (120665773).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (120665771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21897 + ... + 26847.

Almost surely, 2^120665772 is an apocalyptic number.

120665772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120665772 is an abundant number, since it is smaller than the sum of its proper divisors (184862724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120665772 is a wasteful number, since it uses less digits than its factorization.

120665772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 120665772 is about 10984.7973126499. The cubic root of 120665772 is about 494.1529191607.

The spelling of 120665772 in words is "one hundred twenty million, six hundred sixty-five thousand, seven hundred seventy-two".